.px2rem(@name, @px) {
    @{name}: @px / 75 * 1rem;
}
.txh{
	display: flex;
}
html,doby{
	width: 100%;
	height: 100%;
    background: #f7f7f7;
}
#box{
	header{
		.px2rem(height,84);
		.px2rem(line-height,84);
		width: 100%;
		position: fixed;
		top: 0;
		left: 0;
		background: #fff;
		border-bottom: 1px solid #ccc;
		ul{
            .txh;
            justify-content:space-between;
            a{
			li{
              .px2rem(margin-left,30);
		      .px2rem(margin-right,30);
		      .px2rem(font-size,30);
			}
		}
		}

	}
	section{
		
		.px2rem(margin-top,84);
		.px2rem(margin-bottom,84);
	      ul{
			    .txh;
			    height: 90%;
			    .px2rem(margin-top,90);
			    border-bottom: 1px solid #ccc;
			    li{
			    	background: #fff;
			    	color: #000;
			    	.px2rem(font-size,30);
			    	width: 45%;
			    	margin-left: 3%;
			    	text-align: center;
			    	.px2rem(line-height,80);
			    	.px2rem(border-radius,10);
			    }
			    .active{
			    	background: #31cf5a;
			    	color: #fff;
			    }
			}
	}
	footer{
		.px2rem(height,95);
		position: fixed;
		bottom:0;
		left:0;
		width: 100%;
		background: #fff;
		border-top: 1px solid #eee;
		ul{
			.txh;
			margin-top: 2%;
			a{
				flex:1;
			li{
				
				text-align: center;
               }
           }
               li:nth-child(3){
               	 margin-top:-100px;
               	 img{
               	 	width: 140%;
               	 }
               }
		}
	}
}